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Dynamically running mass of light quark and QCD vacuum condensates
Zhou, LJ; Ping RG(平荣刚); Ma WX(马维兴); Ping, RG; Ma, WX
2004
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
卷号42期号:6页码:875-883
通讯作者Guangxi Univ Technol, Dept Informat & Comp Sci, Liuzhou 545006, Peoples R China ; Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
摘要Based on Dyson-Schwinger equations (DSEs) in "rainbow" approximation, the dynamically running mass of light quark and QCD vacuum condensate are investigated. The structure of non-local quark vacuum condensate, the values of local vacuum condensate of quarks and quark-gluon mixture, and dynamical transition of quark mass from current quark to constituent quark are illustrated. At the same time, according to the knowledge and experience learned from an extensive study of the solutions of DSEs, a parameterized form of confining quark propagator is suggested for a practical use. The new parameterized form of quark propagator is analytic everywhere in the finite complex P-2-plane and has no Lehmann representation. The predictions for p(2)-dependence of effective quark masses, M-f(p(2)), defined by the self-energy functions A(f) (P-2) and B-f (p(2)), both from the numerical solutions of DSEs and from its parameterized form, are shown dynamically. Our conclusion is that all numerical results are consistent with empirical values used in QCD sum rules and lattice QCD calculations. For a qualitative study the parameterized form is a sufficiently good approximation to confining quark propagator.
关键词quark mass quark propagator Dyson-Schwinger equations non-perturbative QCD
学科领域Physics
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语种英语
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000226110700018
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238657
专题理论物理室
实验物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Zhou, LJ,Ping RG,Ma WX,et al. Dynamically running mass of light quark and QCD vacuum condensates[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2004,42(6):875-883.
APA Zhou, LJ,平荣刚,马维兴,Ping, RG,&Ma, WX.(2004).Dynamically running mass of light quark and QCD vacuum condensates.COMMUNICATIONS IN THEORETICAL PHYSICS,42(6),875-883.
MLA Zhou, LJ,et al."Dynamically running mass of light quark and QCD vacuum condensates".COMMUNICATIONS IN THEORETICAL PHYSICS 42.6(2004):875-883.
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